Press-operating device.



PATENTED FEB. 20

J. L. HAVERPIELD.

PRESS OPERATING DEVICE.

APPLICATION FILED MAR.11, 1905.

Witnesses Attorneys UNITED STATES PATENT @FFTQF.

JOSFPH LINCOLN HAVERFIELD, OF MAYFIELD, KENTUCKY, ASSIGNOR TO MAYFIELDMFG. (30., OF MAYFIELD, KENTUCKY.

PRESS-OPERATING DEVICE.

Specification of Letters Patent.

Patented Feb. 20, 1906.

Application filed March 11, 1905. Serial No. 249,609.

To all whom it may concern.-

Be it known that I, J OSEPI-I LINooLN HAV- ERFIELD, a citizen of theUnited States, residing at Mayfield, in the county of Graves and Stateof Kentucky, have invented a new and useful Press-Operating Device, ofwhich the following is a specification.

This invention relates to pressoperating devices of that class which areusually employed in connection with balingpresses of various kinds; andit has for its object to simplify and improve the construction andoperation of this class of devices.

With these and other ends in view, which Will readily appear as thenature of the invention is better understood, the same consists in theimproved construction and novel arrangement and combination of parts,which Will be hereinafter fully described, and particularly pointed outin the claim.

In the accompanying drawings has been illustrated a simple and preferredform of embodiment of the invention, it being, however, understood thatno limitation is necessarily made to the precise structural detailstherein exhibited, but that the right is reserved to any changes,alterations, and modifications to which recourse may be had within thescope of the invention and without departing from the spirit orsacrificing the efficiency of the same.

In said drawings, Figure 1 is a plan view of the improved device,illustrating the same during the progress of the operation and with thepress-plunger operated by the power in advancing position. Fig. 2 is adetail plan view illustrating the device in a further advanced positionand with dotted lines illustrating the plunger-operating means inretracted position. Flg. 3 is a side elevation showing the device in theposition illustrated. in Fig. 1. Fig. 4 is a perspective view of thecam-plate detached. Fig. 5 is a perspective detail view of thetrip-lever detached. Fig. 6 is a sectional detail view taken on theplane indicated by the line 6 6 in Fig. 1. e

Corresponding parts in the several figures are indicated throughout bysimilar characters of reference.

Upon a suitable base 1, having a wearplate 2, is mounted a supportingstud or upright 3, supporting a plate 4, having a later ally-extendinglug 5. A spindle 6, extending upwardly from the stud or upright 3, formsan axis for a rotary head 7, having diametrically oppositely extendingarms 8 9. A sweep 10 for the attachment of the draft is connected withthe extremity of one of the arms 8, a brace 11 connecting said sweepwith the arm 9. Each of the arms 8 and 9 is provided with adownward-extending pin 12, said pins being equidistant from the axis ofthe rotary head, and upon said pins rollers, as 13, may be journaled forthe purpose of lessening the friction of the device when in operation.

The laterally-extending lug 5 of the plate 4 is connected with thewear-plate 2 by a vertical pin 14, upon which is fulcrumed a lever 15,having an upstanding flange 16, said flanged lever constituting acam-plate which is operated by the rollers connected with the arms ofthe rotary head. The free end of the lever or cam-plate 15 is supportedupon a curved track 17, which extends laterally from the base 1.

A press-plunger or plunger-rod 18 has been illustrated as being disposedfor reciprocatory sliding movement upon the base 1, a re tracting-spring19 being provided for the purpose of retracting the same. Said plungerrod is also provided with lugs 19, adapted to engage stops, as 20, uponthe base for the purpose of limiting the extent of retraction. Theplunger-rod 18 is connected with the free end of the lever or cam-plate1.5 by means of a link or pitman 21. Said pitman is provided at one endwith spaced plates 22, secured, respectively, to the upper and undersides thereof and connected pivotally with the cam-plate 15 by means ofa pin 23, a spacing-block 24 being interposed, as will be seen in Fig. 3of the drawings. The meeting ends of. the plunger-rod 18 and the pitman21 are made, respectively, convex and concave,

as shown at 25 and 26, said abutting ends beeing shod with wear-plates27 and connected by means of link-plates, as 28. The end of the pitman21 thus forms a socket for the reception of the end of the plunger-rod18, which being thus articulated will operate with a slight degree offriction.

It will be noted that the retracting-spring 19 and the pitman 21 areconnected with op posite sides of the plunger-rod 18, so that anytendency of the plunger-rod to be driven to one side of a straight lineby the pitman 21 will be counteracted by the retracting-spring.

A wear-plate 29 is placed upon the base 1 to afford a foundation uponwhich the plungerrod may slide.

Pivotally supported upon the base at no great distance from the rotaryhead is a triplever 30, which is approximately of S shape and one end orarm of which rests upon the base 1, while the other arm 31 is offset inan upwarddirection, so as to be disposed in the path of the rollers orengaging devices connected with the arms of the rotary head, while thearms 32 of the trip-lever, which rests upon the base, will be disposedin the path of the lower plate 22, which connects the pitman 21 with thecam-plate 15. The latter, it will be seen, is adapted to be accommodatedbetween the spaced plates 22, connecting the pitman with the cam-plate.

In the operation of the device draft is applied to the sweep 10 in thedirection indicated by the arrow A in Fig. 1 of the drawings. As thehead 7 is rotated one of the cam-engaging members will engage the flange16 of the cam-plate 15, thus swinging the latter upon its fulcrum andcausing the plungerrod, which is connected therewith by the pitman 21,to be advanced against the tension of the spring 19. The cam-plate thusadvances to the position indicated in Fig. 2, where the cam-engagingmember is shown on the point of passing out of engagement with theflange 16. As it is greatly to be desired that a stroke of the greatestpossible length shall be imparted to the plunger, the camplate may bepermitted to advance to a point at which the several pivotalconnectingpoints shall be in alinement with each other, thus leaving thedevice stationary on a deadcenter and incapable of being retracted bythe spring 19. A slight advance, however, on the part of the rotary headwill cause the cam-engaging member to en age the arm 31 of thetrip-lever, tilting the atter and causing the arm 32 of said lever topush the pitman 21 ofl? a dead-center, and thus enabling the spring 19to retract the plunger and to resiaae store the parts to normal positionand plac-' ing the flange of the cam-plate directly in the path of thenext camengaging member, whereby the operation will be repeated.

By the device constructed as herein described the press-operating devicewill be operated twice during each rotation of the head 7. A greatleverage will be exerted on the cam-plate, said leverage increasing asthe cam-engaging member moves in the direction of the outer end of thecam-plate, thus applying the greatest power at the end of the stroke ormovement of the plunger when it is most needed. I

The construction of the device is simple and inexpensive, and it may bereadily applied to and used in connection with presses of ordinaryconstruction.

Having thus described the invention, what is claimed is- In a device ofthe class described, a head supported for rotation and havingradiallyextending arms provided with downwardextending cam-engagingmembers, a camplate fulcrumed eccentrically to the rotary head andhaving an upstanding flange disposed in the path of the cam-engagingmembers, a reciprocatory plunger, a pitman having one end connected withsaid plunger and its other end with the free end of the cam plate, and acam-lever pivotally supported adjacent to the rotary head; saidcam-lever having a curved arm offset upwardly and disposed in the pathof the cameng'aging members, and an oppositely extending curved armdisposed in the path of one of the 1 plates connecting the pitman withthe camplate.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two witnesses.

JOSEPH LINCOLN HAVERFIELD.

Witnesses:

J. C. SPEIGHT, H. O. NEALE.

